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Finding the Fourth Proportional to 67,129.53, 92,641.13 and 36,917.15

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Solution

The fourth proportional to 67,129.53, 92,641.13 and 36,917.15 is: 50,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,129.53 : 92,641.13 = 36,917.15 : x
  2. Step 2: Convert to fraction form
    67,129.53/92,641.13 = 36,917.15/x
  3. Step 3: Cross multiply
    67,129.53x = 92,641.13 × 36,917.15
  4. Step 4: Simplify right side
    67,129.53x = 3,420,046,631.25
  5. Step 5: Solve for x
    x = 3,420,046,631.25/67,129.53
  6. Step 6: Final answer
    x = 50,946.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.